Once upon a time there was a prince who loved to paint. So begins the fanciful story about a magical night at Waldemarsudde. The night of the first of August is a special night when the forces of nature create miracles. Nature breathes life into sculptures from the garden and paintings from the castle. Year after year, Prince Eugene's birthday is celebrated. However no one has discovered that. It’s the nature's secret. Only Frank, the post-boy, manages to find out what’s happening at Waldemarsudde. Join him on an exciting journey in the company of the enchanted music and nature.